Apps similar to Roblox Studio include Godot Engine, which is free and open source. Other options are Unity, Unreal Engine, GDevelop and LÖVE. There's no shortage of Game Development Tools like Roblox Studio, with more than 50 alternatives for Windows, Linux, Mac, the web and Android.
Armory is an open-source 3D game engine with full Blender integration, turning it into a complete game development tool. The result is a unified workflow from start to finish, making you work faster. No more jumping between different applications.
ct.js is a 2D game editor (desktop app) based on web technologies. It aims to be an extensible yet simple game-making tool, accessible for both newbies and experienced game developers.
Russia
Fibbo is a free and open-source web-based game engine that allows you to create interactive experiences using JavaScript, right in your browser.
Xogot brings the full power of the Godot game engine to iPad. With a native iPad experience designed for touch, you can create, test, and share games wherever inspiration strikes.
Range Engine is a light and powerful game engine and 3D software, made based on Blender Game Engine with improvements from UPBGE.
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations without any fees or commercial obligations.
United States
PlayCanvas is the world’s easiest to use WebGL Game Engine. It’s free, it’s open source and it’s backed by amazing developer tools.
United Kingdom
One framework for creating powerful cross-platform games. The spiritual successor to XNA with 1000's of titles shipped across desktop, mobile, and console platforms. MonoGame is a fully managed .NET open source game framework without any black boxes.
A complete JavaScript framework for building 3D games with HTML5, WebGL and Web Audio.
United States
Verge3D is a powerful and intuitive toolkit that allows Blender, 3ds Max or Maya users to create immersive web-based experiences. Verge3D can be used to build interactive animations, product configurators, engaging presentations of any kind, online stores, explainers, e-learning...
Russia
Urho3D is a lightweight, cross-platform rendering and game engine implemented in C++ and released under the MIT license. Greatly inspired by OGRE and Horde3D.
Finland
EU
3D game engine that uses web technologies. Perfect for those who already know TypeScript and want to collaborate with designers and artists to create 3D experiences.
SwedenEU
